HT instruments MACROTEST G3 - Manual (Page 38)

MACROTESTG3 - COMBIG3
EN - 37
6.4.3. Mode kA – Verify of breaking capacity of protection device
1. Select the options “TN, TT or “IT”, “25 or 50V”, “50Hz or
60Hz” and the reference voltage in the general settings
of the instrument (see § 5.1.3).
Touch the icon. The screen to the side appears on
the display.
Touch the lower icon. The following screen appears on
the display:
2. Move the left slide bar reference by selecting the
icon to execute the measurement only with the
instrument or the
icon to execute the
measurement with the instrument + optional accessory
IMP57 (see § 6.4.9).
Move the central slide bar reference by selecting the
“L-L”, “L-N” or “L-PE” options (for TN systems only).
Move the right slide bar reference by selecting the "kA"
option.
Touch the icon in the lower right corner to set the
maximum tripping current expressed in "kA" that the
protection must interrupt. The following screen appears
on the display:
3.
Touch the icon to zero the value in the kA field and
use the virtual keyboard to set the value of the breaking
capacity of the protection between 1kA and 9999kA
Confirm the choice by going back to the initial
measurement screen.
4. If possible, disconnect all loads connected downstream
of the measured point, as the impedance of these users
could distort the test results. Connect the shuko plug,
the alligator clips or the remote lead to the electrical
mains according to Fig. 16, Fig. 17, Fig. 18 and Fig. 20
in the nearest possible point to the protection device
Note the presence of the correct voltage values
between L-L and L-PE corresponding to the selections
carried out in the initial phase (see § 5.1.3) as shown in
the screen to the side.